They have been publishing papers in top journals in recent years.
Please explain in great detail
All of them are productive people. Not deadwood. Not retirees.
Who are the seniors leaving? Do you mean the retirees?
Two seniors and one junior
Out of 7 applications in LKY, only one passed
Also 2-3 from LKY, 9 from business?are these tenure denials or resignations?
The Indians gang has a firm foothole. If you look at PhD students, usually more than 50% are Indians. There is an Indian prof who can't publish and the Indian AP they tenured can't publish alone (need to ride on coauthor).
What a crappy place
Sg unis are run top down through authoritarian policies. The older ones are still very entrenched in Chinese culture, and free thinking and questioning authority is not welcome, they will get rid of you quickly.
But free thinking and challenging authority (in a civil way) are probably cornerstones of great ideas and research.